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International Conference on Cyber Security, Cyber Warfare and Digital Forensic (CyberSec)

Statistical analysis for random bits generation on quantum key distribution

Omer K. Jasim Mohammad, Safia Abbas, El-Sayed M. El-Horbaty, Abdel-Badeeh M. Salem

Published Apr 1, 2014• 7 citations
Publisher

Abstract

Recently, Quantum cryptography researchers utilize the quantum keys, in order to provide a more trusted environment for both key distribution and management processes. The quantum keys are generated based on quantum mechanics phenomena. However, all events for the quantum key generation rely on exchanging photons between parties over limited distances. So, in this paper, random tests algorithms, such as NIST and DIEHARD, are implemented to test and evaluate the randomness rates for quantum keys generation. After then, the initialized vector, which is the seed of the symmetric encryption algorithms, is established based on specific analysis to be a key for the algorithms. The paper utilizes the (BB84) quantum key distribution (QKD) protocol based on two different innovated modes, the raw and privacy modes.

DOI
10.1109/cybersec.2014.6913970

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Recently, Quantum cryptography researchers utilize the quantum keys, in order to provide a more trusted environment for both key distribution and management processes. The quantum keys are generated based on quantum mechanics phenomena. However, all events for the quantum key generation rely on exchanging photons between parties over limited distances. So, in this paper, random tests algorithms, such as NIST and DIEHARD, are implemented to test and evaluate the randomness rates for quantum keys generation. After then, the initialized vector, which is the seed of the symmetric encryption algorithms, is established based on specific analysis to be a key for the algorithms. The paper utilizes the (BB84) quantum key distribution (QKD) protocol based on two different innovated modes, the raw and privacy modes.
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Random Numbers determine the security level of cryptographic applications as they are used to generate padding schemes in the encryption/decryption process as well as used to generate cryptographic keys.This paper utilizes the QKD to generate a random quantum bit rely on BB84 protocol, using the NIST and DIEHARD randomness test algorithms to test and evaluate the randomness rates for key generation.The results show that the bits generated using QKD are truly random, which in turn, overcomes the distance limitation (associated with QKD) issue, its well-known challenges with the sending/ receiving data process between different communication parties.
Quantum Key Distribution (QKD) which is the name of cryptography in quantum environment act as the highest developed area in quantum communication and computing technology (QCIT). \n \nQKD is inventive technology which utilize the laws of quantum to create a cryptographic share key to make the communication system secure. The unique feature of QKD assures eavesdropping detectable during quantum communications which is fascinating for a high-level secure environment.Most of the traditional cryptographic methods which we use currently are based on mathematical scheme or Computational complexity theory which are not completely safe. Using quantum cryptography has been achieved extensive steps in communication security establishment. As the information Unit has been changed from “bit” to Quantum bit (Qubit), a new element has been offered that can guarantee the shared information confidentiality between parties. The confidentiality of system is established via exchanging a secret key through a channel of quantum, the key which we use for encrypting the shared data. This structure has quantum integration which has been developed by physics law and techniques of cryptography. \n \nThis thesis has proposed a modified version of QKD protocol, this new protocol will generate a cryptographic share key for a more efficient, lower cost and secure communication between two parties (sender and Receiver). This new protocol principal is similar to BBM92, but the source of photon moved to sender instead of third-party photon generator, following steps will be executed in this Experiment: \n \n•\tObserve different categories protocols of QKD in details \n•\tThe Quantum Mechanics Visualisation Project (QuVis) is the simulation software that has been used for implementing the proposed protocol [BB84 with spin] among the other three (BBM92, B92 and BB84). \n•\tProbability ratio of error will be tested and compared for all protocols, for this experiment 100 to 5000 photons will be sent. \n \nBy Analysing collected data in this experiment, it will be determined which one of this four protocols lead the detecting of eavesdropping. Simulation software accomplishes the value of error key probability which receiver can use and should not pass over the range limit of 0.25 & 0.5.
Quantum cryptography and quantum computing explore the physics and principles of randomness achieved through quantum mechanics. The aim of quantum cryptography is to transfer data from the sender to the receiver without any information loss, error, or violation of the needed security aspects. Ideally, the data should be transferred with basic standards like Confidentiality, Integrity, and Availability (CIA). Also, other services like authentication, authorization, access control, digital signatures, etc. need to be implemented depending on the requirement of the application. For all these services, random numbers are required to be used as nonces, session keys, identifiers, initialization vectors, seed values, etc. This work primarily focuses on generating random numbers using the Quantum Key Distribution (QKD) as a parallel benefit. BB84 and Six State Protocol (SSP) are the protocols used in Quantum Key Distribution (QKD). In this work, these protocols are simulated. The security levels of these protocols are analyzed based on the parameters like randomization and probability. The protocols are implemented in Qiskit software. Filter arrangement plays an important role in Quantum Cryptography. This offers an additional axis compared to the BB84 protocol. The approach thereby improves the randomization in SSP protocol. The comparison of both protocols shows that the SSP protocol gives better randomization when compared to the BB84 protocol.
All traditional cryptographic algorithms used in the network communication environments, relied on mathematical models and computational assumptions, are actually unsafe and apt by many attackers (quantum and man-in-the-middle attacks). Therefore, nowadays Quantum Key Distribution (QKD) promises a secure key agreement by using quantum mechanical systems. QKD becomes a significant trend of new cryptographic revolution. This paper explains how cryptography exploits the quantum mechanics in order to achieve an encryption/decryption process. Additionally, this paper provides a standard simulation for QKD-BB84 protocol and describes improvement key generation and key distribution mechanisms. Then, validation, results and efficiency of BB84 protocol are presented using different security configurations. Finally, our results indicated that the QKD is susceptible to corporate with different security applications and achieve the key availability for such applications. However, it suffers from the higher rate of authentication cost.
Abstract In the process of quantum key distribution (QKD), the communicating parties need to randomly determine quantum states and measurement bases. To ensure the security of key distribution, we aim to use true random sequences generated by true random number generators as the source of randomness. In practical systems, due to the difficulty of obtaining true random numbers, pseudo-random number generators are used instead. Although the random numbers generated by pseudo-random number generators are statistically random, meeting the requirements of uniform distribution and independence, they rely on an initial seed to generate corresponding pseudo-random sequences. Attackers may predict future elements from the initial elements of the random sequence, posing a security risk to quantum key distribution. This paper analyzes the problems existing in current pseudo-random number generators and proposes corresponding attack methods and applicable scenarios based on the vulnerabilities in the pseudo-random sequence generation process. Under certain conditions, it is possible to obtain the keys of the communicating parties with very low error rates, thus effectively attacking the quantum key system. This paper presents new requirements for the use of random numbers in quantum key systems, which can effectively guide the security evaluation of quantum key distribution protocols.